EXPERIMENT NUMBER –Practical 7.
Name: Loga Aswin R. Student Uid : 21BCS10573
Section: ON21AML109 B Date of performance: 19.04.22
Course: BE CSE AIML. Subject name: Oops c++
Topic : Program based run time polymorphism
AIM OF THE EXPERIMENT –WAP to create a class that will maintain the records of person
with details (Name and Age) and find the eldest among them. The program must use this pointer to
return the result by overloading> operator among two objects.
FLOWCHART/ ALGORITHM
1. Create a class Records. Declare some required variables such as name
and age.
2. Variables will be private.
3. These variables will be accessed by the member functions of the class
Records.
4. Now we will create a constructor which will initialize the variables with their
required values.
5. The constructor which we will create will be a parameterized constructor.
6. Now we will define a functions whose return type will be Records.
7. In the function we will check whose age is greater and will be printed that
age.
8. in the function we will use ternary operator to find out the greatest of them
by using ‘this’ pointer that will hold the position of the greater age and then
again compare with the next age.
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
SUBJECT CODE-CSP-
USING C++ LAB
152
PROGRAM CODE:
#include<iostream> using
namespace std; class
Records
{ int age;
string name;
public:
Records() {};
Records(string n,int a): name(n),age(a) {}
void show()
cout<<name<<" : "<<age<<endl;
Records eldest(Records o)
return (o.age>age)? o: *this;
};
int main()
Records ob[3]={Records("Ani",21),Records("Arka",50),Records("Ram",30)}; Records res; for(int
i=0;i<2;i++) res = ob[i].eldest(ob[i+1]); res.show(); return 0;
}
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
SUBJECT CODE-CSP-
USING C++ LAB
152
PROGRAMS’ EXPLANATION (in brief)
the records of person with details (Name and Age) and find the eldest among them. The program
must use this pointer to return the result by overloading> operator among two objects.
OUTPUT:
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
SUBJECT CODE-CSP-
USING C++ LAB
152
EXPERIMENT NUMBER –Practical 7.2
AIM OF THE EXPERIMENT –WAP to access members using pointer to object
members.
FLOWCHART/ ALGORITHM –
• Step 1 - Include the required header files (iostream.h and conio.h).
• Step 2 - Create a class (Student) with the following class members
as public members.
o stud_name, marks as data members.
o getStudentInfo() and displayStudentInfo() as member
functions.
• Step 3 - Implement the getStudentInfo() and displayStudentInfo()
member functions.
• Step 4 - Create a main() method.
• Step 5 - Create an array of stud object wigth max size and a pointer
object of Student class.
• Step 6 - Assign base address of object array to pointer object and
make function calls to getStudentInfo() and displayStudentInfo()
using class pointer object.
PROGRAM CODE
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
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USING C++ LAB
152
#include<iostream>
using namespace std;
class Number
private:
int num;
public:
//constructor
Number(){ num=0; };
//member function to get input
void inputNumber (void)
{ cout<<"Enter
an integer number: "; cin>>num;
//member function to display number
void displayNumber()
cout<<"Num: "<<num<<endl;
};
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
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USING C++ LAB
152
//Main
function int main()
//declaring object to the class number
Number N;
//input and display number using norn object
N.inputNumber();
N.displayNumber();
//declaring pointer to the object Number
*ptrN; ptrN = new Number; //creating & assigning
memory
//printing default value
cout<<"Default value... "<<endl;
//calling member function with pointer
ptrN->displayNumber();
//input values and print
ptrN->inputNumber(); ptrN-
>displayNumber();
return 0;
PROGRAMS’ EXPLANATION (in brief)
C++ allows us to create a class with its members such as data members and member functions.
One way to access the data members and member function of a class is through the object of
the class with a dot operator. C++ also provides us a few operators through we could access the
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
SUBJECT CODE-CSP-
USING C++ LAB
152
data members and member functions of a class by using pointers.
These operators are known as dereferencing operators.
Output:
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
SUBJECT CODE-CSP-
USING C++ LAB
152
EXPERIMENT NUMBER –Practical 7.3
AIM OF THE EXPERIMENT – WAP to design a class representing the information
regarding digital library (books, tape: book & tape should be separate classes having
the base class as media). The class should have the functionality for adding new item,
issuing, deposit etc. The program should link the objects with concerned function by
the concept of runtime polymorphism.
FLOWCHART/ ALGORITHM –
1.Start
2. Create a class Records. Declare some required variables such as name
and age.
3. Variables will be private.
4. These variables will be accessed by the member functions of the class
Records.
5. Now we will create a constructor which will initialize the variables with their
required values.
6. The constructor which we will create will be a parameterized constructor.
7. Now we will define a functions whose return type will be Records.
8. In the function we will check whose age is greater and will be printed that
age.
9. in the function we will use ternary operator to find out the greatest of them
by using ‘this’ pointer that will hold the position of the greater age and then
again compare with the next age
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
SUBJECT CODE-CSP-
USING C++ LAB
152
PROGRAM CODE
#include<iostream>
#include<string.h>
using namespace std;
class media { protected:
char title[50]; float
price; public:
media(char *s, float a) {
strcpy(title, s); price = a;
} virtual void display()
{}
}; class book : public
media
{ int pages;
public:
book(char *s, float a, int p) : media(s,a)
{
pages = p; }
void display();
}; class tape : public
media
{ float time;
public:
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
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USING C++ LAB
152
tape(char * s,
float a, float t):media(s,a)
{ time =t; }
void display();
}; void
book ::display()
{ cout<<"\n Title:"<<title; cout<<"\n Pages:"<<pages;
cout<<"\n Price:"<<price;
} void tape ::display
()
{ cout<<"\n Title:"<<title; cout<<"\n Play
Time:"<<time<<"mins"; cout<<"\n Price:"<<price;
} int
main()
{ char *
title =
new
char[30];
float
price,
time; int
pages;
cout<<"\
n Enter
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
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USING C++ LAB
152
Book
Details \
n";
cout<<"\
n Title:";
cin>>title
cout<<"\
n Price:";
cin>>pric
e;
cout<<"\
Pages:";
cin>>pag
es; book
book1(titl
e, price,
pages);
cout<<"\
n Enter
Tape
Details";
cout<<"\
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
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USING C++ LAB
152
n
Title:";
cin>>title
cout<<"\
n Price:";
cin>>pric
e;
cout<<"\
n Play
Times(mi
ns):";
cin>>tim
e; tape
tape1(titl
e, price,
time);
media*
list[2];
list[0] =
&book1;
list[1] =
&tape1;
cout<<"\
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
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USING C++ LAB
152
n Media
Details";
cout<<"\n..............Book. ";
list[0]->display (); cout<<"\
n..............Tape. "; list[1]-
>display (); return 0;
PROGRAMS’ EXPLANATION (in brief)
A class representing the information regarding digital library (books, tape: book & tape should
be separate classes having the base class asmedia). The class should have the functionality for
adding new item, issuing, deposit etc. The program should link the objects with concerned
function by theconcept of runtime polymorphism.
Output:
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
SUBJECT CODE-CSP-
USING C++ LAB
152
LEARNING OUTCOMES
• Identify situations where computational methods would be useful.
• Approach the programming tasks using techniques learnt and write pseudo-code.
• Choose the right data representation formats based on the requirements of the
problem.
• Use the comparisons and limitations of the various programming constructs and
choose the right one for the task.
EVALUATION COLUMN (To be filled by concerned faculty only)
Sr. No. Parameters Maximum Marks
Marks Obtained
1. Worksheet Completion including writing 10
learning objective/ Outcome
2. Post Lab Quiz Result 5
3. Student engagement in Simulation/ 5
Performance/ Pre Lab Questions
4. Total Marks 20
SUBJECT NAME- OBJECT ORIENTED PROGRAMMING
SUBJECT CODE-CSP-
USING C++ LAB
152
